Use of reductive compounds for strengthening and improving the structure of materials containing keratin

US6482808B1 · kind B1 · utility

Assignee

• Wella GmbH · DE

Inventors

• Christian Springob · Neu-Listernohl, DE
• Manuela Javet · Marly, CH
• Ursula Hehner · Brensbach, DE
• Thomas Kripp · Fränkisch-Crumbach, DE
• Beate Grasser · Hattersheim, DE
• Kirstin Uhl · Darmstadt, DE
• Guenther Lang · Reinheim, DE

Key dates

• Filing date: Jan 23, 2001
• Grant date: Nov 19, 2002
• Expiry date: Jan 23, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61Q5/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The composition for hardening, strengthening and restructuring keratin-containing materials and/or for increasing the volume of keratin-containing fibers, such as hair, contains from 0.3 to 50.0% by weight of one or more reductones, each having a —(HO)C═C(OH)— group. The reductone ingredient is preferably ascorbic or isoascorbic acid, a salt of ascorbic or isoascorbic acid, such as an alkali metal or alkaline earth metal salt, an ester of ascorbic or isoascorbic acid, 6-O-palmitoyl ascorbate, ascorbyl phosphate, 2,3-dihydroxy-2-propenal and hydroxypropanedial. A method of treating keratin-containing materials or fibers to harden, strengthen and restructure keratin-containing materials and/or to increase the volume of the keratin-containing fibers by applying this composition and allowing it to act is described. A method of pre-treating keratin-containing material that is to be subjected to a chemical or physical treatment, such as dyeing or permanent shaping is also described.